CN113982708B - A compressed air energy storage system coupled with Karina cycle - Google Patents

Abstract

Translated fromChinese

本发明提供一种耦合卡琳娜循环的压缩空气储能系统，涉及储能技术领域。系统包括双层储罐和卡琳娜循环机组，其中，双层储罐、多级冷却器、储热罐、多级回热器、C1口、D1口依次连通，形成循环回路、且内部的流动介质为导热油，导热油被压缩空气加热后存储至储热罐，导热油加热流经多级回热器的压缩空气，导热油利用余温加热流经蒸发器的氨水溶液，并流回双层储罐；B1口、分离器、氨膨胀机、吸收器、冷凝器、工质泵、C2口、D2口、A1口依次连通，形成循环回路，内部的流动介质为氨水溶液，氨膨胀机用于膨胀来自分离器的富氨蒸气做功并推动第二发电机输出电力。这样，可有效增加系统的储能容量，减少储能过程中的热量散失，提高储能效率。

The invention provides a compressed air energy storage system coupled with Karina cycle, and relates to the technical field of energy storage. The system includes a double-layer storage tank and a Karina cycle unit, wherein the double-layer storage tank, the multi-stage cooler, the heat storage tank, the multi-stage regenerator, the C1 port, and the D1 port are connected in sequence to form a circulation loop, and the internal The flow medium is heat transfer oil, which is heated by the compressed air and stored in the heat storage tank. Double-layer storage tank; B1 port, separator, ammonia expander, absorber, condenser, working fluid pump, C2 port, D2 port, A1 port are connected in sequence to form a circulation loop, the internal flow medium is ammonia solution, ammonia expansion The generator is used to expand the ammonia-rich vapor from the separator to do work and drive the second generator to output electricity. In this way, the energy storage capacity of the system can be effectively increased, the heat loss during the energy storage process can be reduced, and the energy storage efficiency can be improved.

Description

Translated fromChinese

一种耦合卡琳娜循环的压缩空气储能系统A compressed air energy storage system coupled with Karina cycle

技术领域technical field

本发明涉及储能技术领域，具体而言，涉及一种耦合卡琳娜循环的压缩空气储能系统。The invention relates to the technical field of energy storage, in particular to a compressed air energy storage system coupled with a Karina cycle.

背景技术Background technique

随着我国可再生能源、分布式供能和智能电网的蓬勃发展，电网容量不断扩张，用电峰谷差日益增加，对储能技术的需求越来越大。大规模发展储能技术，可以有效解决风能、太阳能等间歇式可再生能源发电不稳定的问题，平滑波动性电能输入、实现电网削峰填谷，提高可再生能源发电的利用率，增强电网运行的安全性。With the vigorous development of renewable energy, distributed energy supply and smart grid in China, the capacity of the grid continues to expand, the peak-to-valley difference in electricity consumption is increasing, and the demand for energy storage technology is increasing. The large-scale development of energy storage technology can effectively solve the problem of unstable power generation of intermittent renewable energy such as wind energy and solar energy, smooth the input of fluctuating electric energy, realize the peak shaving and valley filling of the power grid, improve the utilization rate of renewable energy power generation, and enhance the operation of the power grid. security.

在现有的大规模电力储能技术中，压缩空气储能得到了广泛应用，其主要原理是利用电力系统低谷时段的剩余电力将空气压缩储存在大容量的高压气体储罐里，在需要时将其释放至透平膨胀机发电，具有容量大、经济性好、环境友好、运行成本低等优势。In the existing large-scale power energy storage technology, compressed air energy storage has been widely used. It is released to the turboexpander for power generation, which has the advantages of large capacity, good economy, environmental friendliness, and low operating costs.

但是，现有的先进绝热压缩空气储能(AA-CAES)系统在运行过程中会产生大量压缩热，这部分压缩热由于换热器传热温差的限制，不能够完全传递给释能过程的压缩空气，所以系统热量不能够被完全利用，使系统运行效率降低，同时会导致储热系统中的储热介质温度上升，会对系统下一次运行产生不利影响，解决方法通常是引入额外的冷却装置，但这会导致系统复杂程度的增加和热能的浪费。However, the existing advanced adiabatic compressed air energy storage (AA-CAES) system will generate a large amount of compression heat during operation, and this part of the compression heat cannot be completely transferred to the energy release process due to the limitation of the heat transfer temperature difference of the heat exchanger. Compressed air, so the heat of the system cannot be fully utilized, which reduces the operating efficiency of the system. At the same time, it will cause the temperature of the heat storage medium in the heat storage system to rise, which will adversely affect the next operation of the system. The solution is usually to introduce additional cooling. device, but this will lead to an increase in the complexity of the system and waste of thermal energy.

发明内容SUMMARY OF THE INVENTION

本发明的目的包括提供一种耦合卡琳娜循环的压缩空气储能系统，其能够有效增加系统的储能容量，减少储能过程中的热量散失，提高储能效率。The purpose of the present invention includes providing a compressed air energy storage system coupled with Karina cycle, which can effectively increase the energy storage capacity of the system, reduce the heat loss during the energy storage process, and improve the energy storage efficiency.

本发明的实施例可以这样实现：Embodiments of the present invention can be implemented as follows:

第一方面，本发明提供一种耦合卡琳娜循环的压缩空气储能系统，耦合卡琳娜循环的压缩空气储能系统包括双层储罐、多级压缩机、多级冷却器、多级膨胀机、多级回热器、储热罐、电动机、第一发电机和卡琳娜循环机组，其中，多级冷却器和电动机均与多级压缩机连接，多级回热器和第一发电机均与多级膨胀机连接；In a first aspect, the present invention provides a compressed air energy storage system coupled with Karina cycle. The compressed air energy storage system coupled with Karina cycle includes a double-layer storage tank, a multi-stage compressor, a multi-stage cooler, a multi-stage Expander, multi-stage regenerator, heat storage tank, electric motor, first generator and Karina cycle unit, wherein, multi-stage cooler and electric motor are connected with multi-stage compressor, multi-stage regenerator and first The generators are all connected with multi-stage expanders;

卡琳娜循环机组包括蒸发器、分离器、氨膨胀机、吸收器、冷凝器、工质泵、预热器和第二发电机，其中，蒸发器包括相互连通的A1口和B1口、相互连通的C1口和D1口，预热器包括相互连通的A2口和B2口、相互连通的C2口和D2口；The Karina cycle unit includes an evaporator, a separator, an ammonia expander, an absorber, a condenser, a working fluid pump, a preheater and a second generator, wherein the evaporator includes an A1 port and a B1 port that communicate with each other. Connected C1 port and D1 port, the preheater includes mutually connected A2 port and B2 port, and mutually connected C2 port and D2 port;

双层储罐、多级冷却器、储热罐、多级回热器、C1口、D1口依次连通，形成循环回路、且内部的流动介质为导热油，导热油从双层储罐输送至多级冷却器、并被压缩空气加热后存储至储热罐，储热罐输送导热油至多级回热器，导热油加热流经多级回热器的压缩空气，多级回热器输送导热油至蒸发器，导热油利用余温加热流经蒸发器的氨水溶液，并流回双层储罐；The double-layer storage tank, the multi-stage cooler, the heat storage tank, the multi-stage regenerator, the C1 port and the D1 port are connected in sequence to form a circulation loop, and the internal flowing medium is heat transfer oil, and the heat transfer oil is transported from the double-layer storage tank to up to The heat transfer oil is sent to the multi-stage regenerator, the heat transfer oil heats the compressed air flowing through the multi-stage regenerator, and the multi-stage regenerator conveys the heat transfer oil. To the evaporator, the heat transfer oil uses the residual temperature to heat the ammonia solution flowing through the evaporator, and flows back to the double-layer storage tank;

B1口、分离器、氨膨胀机、吸收器、冷凝器、工质泵、C2口、D2口、A1口依次连通，形成循环回路，且内部的流动介质为氨水溶液，氨膨胀机用于膨胀来自分离器的富氨蒸气做功并推动第二发电机输出电力。Port B1, separator, ammonia expander, absorber, condenser, working fluid pump, port C2, port D2, and port A1 are connected in sequence to form a circulation loop, and the internal flow medium is an aqueous ammonia solution, and the ammonia expander is used for expansion The ammonia-rich vapor from the separator does work and drives the second generator to output electricity.

在可选的实施方式中，双层储罐包括外层储罐和内层储罐，内层储罐通过通气管道支撑在外层储罐的内部，内层储罐用于存储加压后的空气，外层储罐用于存储蓄热工质。In an optional embodiment, the double-layer storage tank includes an outer-layer storage tank and an inner-layer storage tank, the inner-layer storage tank is supported inside the outer-layer storage tank through a ventilation pipe, and the inner-layer storage tank is used for storing pressurized air , the outer storage tank is used to store the regenerative working medium.

在可选的实施方式中，内层储罐的内壁上设置有换热翅片。In an optional embodiment, heat exchange fins are provided on the inner wall of the inner storage tank.

在可选的实施方式中，外层储罐设置有两处连接口、且分别与多级冷却器和多级回热器连接，内层储罐设置有两处连接口、且分别与多级冷却器和节流阀连接。In an optional embodiment, the outer storage tank is provided with two connection ports, which are respectively connected to the multi-stage cooler and the multi-stage regenerator, and the inner storage tank is provided with two connection ports, which are respectively connected to the multi-stage cooler and the multi-stage regenerator. The cooler and the throttle valve are connected.

在可选的实施方式中，卡琳娜循环机组还包括膨胀阀；In an optional embodiment, the Karina cycle unit further includes an expansion valve;

预热器和分离器连通，利用贫氨溶液加热来自工质泵的氨水溶液，膨胀阀的入口和预热器连通，用于对贫氨溶液节流降压，吸收器与膨胀阀、氨膨胀机出口连通，用于将贫氨溶液与富氨蒸气混合，形成氨水混合工质。The preheater is communicated with the separator, and the lean ammonia solution is used to heat the ammonia solution from the working fluid pump. The inlet of the expansion valve is communicated with the preheater for throttling and depressurizing the lean ammonia solution. The absorber is connected to the expansion valve and ammonia expansion. The outlet of the machine is connected, and is used to mix the lean ammonia solution with the rich ammonia vapor to form a mixed working medium of ammonia and water.

在可选的实施方式中，冷凝器连接吸收器出口，冷凝器与多级膨胀机的出口相连，并以多级膨胀机输出的空气作为冷源，冷源用于对氨水混合工质降温冷凝，形成氨水混合物。In an optional embodiment, the condenser is connected to the outlet of the absorber, the condenser is connected to the outlet of the multi-stage expander, and the air output from the multi-stage expander is used as a cold source, and the cold source is used to cool down and condense the ammonia-water mixed working medium , forming an ammonia-water mixture.

在可选的实施方式中，多级压缩机包括多个串联的压缩机，多级冷却器包括多个冷却器，每个压缩机的出口设置有一个冷却器。In an alternative embodiment, the multi-stage compressor includes a plurality of compressors connected in series, the multi-stage cooler includes a plurality of coolers, and an outlet of each compressor is provided with a cooler.

在可选的实施方式中，多级膨胀机包括多个串联的膨胀机，多级回热器包括多个回热器，每个膨胀机的入口设置有一个回热器。In an optional embodiment, the multi-stage expander includes a plurality of expanders connected in series, the multi-stage regenerator includes a plurality of regenerators, and an inlet of each expander is provided with a regenerator.

在可选的实施方式中，在系统压缩储能的过程中，外层储罐内的导热油用于吸收内层储罐内空气的热量，以降低内层储罐内空气的温度。In an optional embodiment, in the process of compressing the energy storage system, the heat transfer oil in the outer storage tank is used to absorb the heat of the air in the inner storage tank, so as to reduce the temperature of the air in the inner storage tank.

在可选的实施方式中，在系统释能的过程中，外层储罐内的导热油用于对内层储罐进行加热，以提高内层储罐内空气的温度。In an optional embodiment, during the energy release process of the system, the heat transfer oil in the outer storage tank is used to heat the inner storage tank, so as to increase the temperature of the air in the inner storage tank.

本发明实施例提供的一种耦合卡琳娜循环的压缩空气储能系统的有益效果包括：The beneficial effects of the compressed air energy storage system coupled with the Karina cycle provided by the embodiment of the present invention include:

通过低温导热油实现对压缩空气储能系统在充气储能和膨胀释能阶段储气罐内温度的调节，通过卡琳娜循环机组实现系统在膨胀释能阶段余温的利用，可解决在系统充气储能过程中储气罐温度升高，造成储气量减少和膨胀释能过程中温度降低，膨胀空气质量减少以及热源浪费的问题，可有效增加压缩空气储能系统的储能容量，减少储能过程中的热量散失，提高储能效率。The low temperature heat transfer oil is used to adjust the temperature in the air storage tank of the compressed air energy storage system in the stages of inflating energy storage and expansion energy release. In the process of inflatable energy storage, the temperature of the air storage tank increases, resulting in the reduction of the air storage capacity and the temperature reduction during the expansion and energy release process, the reduction of the expansion air quality and the waste of heat sources, which can effectively increase the energy storage capacity of the compressed air energy storage system and reduce the storage capacity. The heat in the energy process is dissipated and the energy storage efficiency is improved.

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

图1为本发明实施例提供的一种耦合卡琳娜循环的压缩空气储能系统的组成示意图。FIG. 1 is a schematic diagram of the composition of a compressed air energy storage system coupled with a Karina cycle according to an embodiment of the present invention.

图标：100-耦合卡琳娜循环的压缩空气储能系统；200-多级压缩机；1-一级压缩机；2-二级压缩机；300-多级冷却器；3-一级冷却器；4-二级冷却器；400-双层储罐；5-外层储罐；6-内层储罐；7-储热罐；8-电动机；9-第一发电机；500-多级膨胀机；10-一级膨胀机；11-二级膨胀机；600-多级回热器；12-一级回热器；13-二级回热器；14-第一电磁阀；15-第二电磁阀；16-第三电磁阀；700-卡琳娜循环机组；17-蒸发器；18-分离器；19-氨膨胀机；20-第二发电机；21-吸收器；22-膨胀阀；23-冷凝器；24-工质泵；25-预热器。Icon: 100-compressed air energy storage system coupled with Karina cycle; 200-multi-stage compressor; 1-first-stage compressor; 2-second-stage compressor; 300-multi-stage cooler; 3-first-stage cooler ; 4- secondary cooler; 400- double storage tank; 5- outer storage tank; 6- inner storage tank; 7- heat storage tank; 8- motor; 9- first generator; 500- multi-stage Expander; 10-first-stage expander; 11-secondary expander; 600-multi-stage regenerator; 12-first-stage regenerator; 13-secondary regenerator; 14-first solenoid valve; 15- 2nd solenoid valve; 16-third solenoid valve; 700-Karina cycle unit; 17-evaporator; 18-separator; 19-ammonia expander; 20-second generator; 21-absorber; 22- Expansion valve; 23-condenser; 24-working fluid pump; 25-preheater.

具体实施方式Detailed ways

为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

在本发明的描述中，需要说明的是，若出现术语“上”、“下”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, or It is the orientation or positional relationship that the product of the invention is usually placed in use, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation , so it should not be construed as a limitation of the present invention.

此外，若出现术语“第一”、“第二”等仅用于区分描述，而不能理解为指示或暗示相对重要性。In addition, where the terms "first", "second" and the like appear, they are only used to differentiate the description, and should not be construed as indicating or implying relative importance.

需要说明的是，在不冲突的情况下，本发明的实施例中的特征可以相互结合。It should be noted that the features in the embodiments of the present invention may be combined with each other without conflict.

压缩空气储能系统在运行中需要对储气装置进行频繁的充放气循环。在充放气过程中，由于储气罐内压力持续变化，根据理想气体状态方程，储气罐内空气的温度变化为：The compressed air energy storage system requires frequent charging and discharging cycles of the gas storage device during operation. In the process of filling and deflating, due to the continuous change of the pressure in the gas storage tank, according to the ideal gas state equation, the temperature change of the air in the gas storage tank is:

由理想气体状态方程可知，相同压力下，随着储气罐内温度的变化，储气罐内储存的空气质量也会发生变化。在充气储能阶段，会产生大量压缩热，储气罐内温度越高，储气罐内存储的空气质量会越少，从而降低了系统的储能能力。在放气释能阶段，随着储气罐内高压空气节流后做功，储气罐内温度会逐渐降低，放气结束时储气罐内的温度将低于放气开始时的温度，根据理想气体状态方程，储气罐内的温度越低，其储存的空气质量将越大。It can be known from the ideal gas state equation that under the same pressure, with the change of the temperature in the gas storage tank, the air quality stored in the gas storage tank will also change. During the charging and energy storage stage, a large amount of compression heat will be generated. The higher the temperature in the gas storage tank, the less air quality will be stored in the gas storage tank, thus reducing the energy storage capacity of the system. In the stage of degassing and releasing energy, as the high-pressure air in the air storage tank does work after throttling, the temperature in the air storage tank will gradually decrease. Ideal gas equation of state, the lower the temperature in the gas storage tank, the greater the air quality it will store.

如果能够在压缩空气储能系统充放气过程中充分利用好各级热源使气腔内的温度保持在稳定范围内，将显著提高储气装置的单位容积循环量，进而提高储能效率和经济效益。If the heat sources at all levels can be fully utilized to keep the temperature in the air cavity within a stable range during the charging and discharging process of the compressed air energy storage system, the circulation volume per unit volume of the air storage device will be significantly increased, thereby improving the energy storage efficiency and economy. benefit.

本实施例提供的一种耦合卡琳娜循环的压缩空气储能系统，通过设置双层储罐和添加卡琳娜循环机组，将低温的蓄热工质储存于双层储罐的外层，高压空气储存于双层储罐的内层，利用低温的蓄热工质对储气罐内空气进行温度调节，同时通过卡琳娜循环机组高效的利用回热器出口的低温导热油的热量，既保证了系统能在额定参数运行，又有效提高了系统的储能效率和储能密度。This embodiment provides a compressed air energy storage system coupled with Karina cycle. By setting up a double-layer storage tank and adding a Karina cycle unit, the low-temperature heat storage medium is stored in the outer layer of the double-layer storage tank. The high-pressure air is stored in the inner layer of the double-layer storage tank, and the low-temperature heat storage medium is used to adjust the temperature of the air in the air storage tank. It not only ensures that the system can operate at rated parameters, but also effectively improves the energy storage efficiency and energy storage density of the system.

具体的，请参考图1，本实施例提供的一种耦合卡琳娜循环的压缩空气储能系统100包括双层储罐400、多级压缩机200、多级冷却器300、多级膨胀机500、多级回热器600、储热罐7、电动机8、第一发电机9和卡琳娜循环机组700。Specifically, please refer to FIG. 1 , a compressed airenergy storage system 100 coupled with Karina cycle provided in this embodiment includes a double-layer storage tank 400 , amulti-stage compressor 200 , amulti-stage cooler 300 , and amulti-stage expander 500 ,multi-stage regenerator 600 , heat storage tank 7 , electric motor 8 , first generator 9 andKarina cycle unit 700 .

其中，多级冷却器300和电动机8均与多级压缩机200连接，多级压缩机200的进气口与大气连通，多级回热器600和第一发电机9均与多级膨胀机500连接，多级膨胀机500的排气口与大气连通。Themulti-stage cooler 300 and the motor 8 are both connected to themulti-stage compressor 200, the air inlet of themulti-stage compressor 200 is connected to the atmosphere, and themulti-stage regenerator 600 and the first generator 9 are both connected to themulti-stage expander 500 is connected, and the exhaust port of themulti-stage expander 500 is communicated with the atmosphere.

双层储罐400包括外层储罐5和内层储罐6，内层储罐6通过通气管道支撑在外层储罐5的内部，内层储罐6用于存储加压后的空气，外层储罐5用于存储蓄热工质。内层储罐6内设置测温元件，内层储罐6的内壁上设置有换热翅片。外层储罐5设置有两处连接口、且分别与多级冷却器300和多级回热器600直接或间接连接，内层储罐6设置有两处连接口、且分别与多级冷却器300和节流阀连接。高压通气管以密封的方式穿过外层储罐5、连接到内层储罐6。内层储罐6与外层储罐5之间可以采用插管焊接方式连接，也可采用法兰方式连接。The double-layer storage tank 400 includes an outer-layer storage tank 5 and an inner-layer storage tank 6. The inner-layer storage tank 6 is supported inside the outer-layer storage tank 5 through a ventilation pipe. The inner-layer storage tank 6 is used to store pressurized air, and the outer-layer storage tank 6 The layer storage tank 5 is used to store the heat storage working medium. A temperature measuring element is arranged in the inner layer storage tank 6 , and heat exchange fins are arranged on the inner wall of the inner layer storage tank 6 . The outer storage tank 5 is provided with two connection ports, which are directly or indirectly connected to themulti-stage cooler 300 and themulti-stage regenerator 600, respectively, and the inner storage tank 6 is provided with two connection ports, which are respectively connected to the multi-stage cooler. Thedevice 300 is connected to the throttle valve. The high-pressure ventilation pipe passes through the outer storage tank 5 and is connected to the inner storage tank 6 in a sealed manner. The inner layer storage tank 6 and the outer layer storage tank 5 may be connected by intubation welding or flanged connection.

多级压缩机200用于消耗电网低谷电力或可再生能源电力生产高压空气。多级膨胀机500用于在有用电需求时利用高压空气膨胀做功驱动第一发电机9进行发电。Themulti-stage compressor 200 is used to produce high pressure air from grid trough electricity or renewable energy electricity. Themulti-stage expander 500 is used to drive the first generator 9 to generate electricity by utilizing high-pressure air expansion work when there is a demand for electricity.

多级压缩机200包括多个串联的压缩机，多级冷却器300包括多个冷却器，每个压缩机的出口设置有一个冷却器。多级膨胀机500包括多个串联的膨胀机，多级回热器600包括多个回热器，每个膨胀机的入口设置有一个回热器。Themulti-stage compressor 200 includes a plurality of compressors connected in series, and themulti-stage cooler 300 includes a plurality of coolers, and an outlet of each compressor is provided with a cooler. Themulti-stage expander 500 includes a plurality of series-connected expanders, themulti-stage regenerator 600 includes a plurality of regenerators, and an inlet of each expander is provided with a regenerator.

在多级压缩机200中，相邻的各级压缩机通过级间冷却器的高温侧连通，末级压缩机通过末级冷却器的高温侧与内层储罐6的进口连通；内层储罐6的出口通过初级回热器的低温侧与初级膨胀机的进口连通，相邻的各级膨胀机通过级间回热器的低温侧连通；级间冷却器的低温侧进口与外层储罐5的出口连通、级间冷却器低温侧出口与储热罐7的进口连通；回热器的高温侧进口均与储热罐7的出口连通，回热器的高温侧出口与外层储罐5连通；回热器的高温侧出口与外层储罐5进口连通。In themulti-stage compressor 200, the compressors of adjacent stages are communicated through the high temperature side of the interstage cooler, and the last stage compressor is communicated with the inlet of the inner layer storage tank 6 through the high temperature side of the last stage cooler; The outlet of the tank 6 is communicated with the inlet of the primary expander through the low temperature side of the primary regenerator, and the adjacent expanders at all levels are communicated through the low temperature side of the interstage regenerator; the low temperature side inlet of the interstage cooler is connected to the outer storage tank. The outlet of the tank 5 is communicated with the outlet of the low temperature side of the interstage cooler and the inlet of the heat storage tank 7; The tank 5 is communicated; the high temperature side outlet of the regenerator is communicated with the outer layer storage tank 5 inlet.

本实施例中，多级压缩机200包括串联的一级压缩机1和二级压缩机2，多级冷却器300包括一级冷却器3和二级冷却器4，一级冷却器3连接在一级压缩机1与二级压缩机2之间，二级冷却器4连接在二级压缩机2与内层储罐6之间。多级膨胀机500包括串联的一级膨胀机10和二级膨胀机11，多级回热器600包括一级回热器12和二级回热器13，一级回热器12连接在内层储罐6与一级膨胀机10之间，二级回热器13连接在一级膨胀机10与二级膨胀机11之间。In this embodiment, themulti-stage compressor 200 includes a series-connected primary compressor 1 and asecondary compressor 2, and themulti-stage cooler 300 includes a primary cooler 3 and a secondary cooler 4, and the primary cooler 3 is connected to Between the primary compressor 1 and thesecondary compressor 2 , the secondary cooler 4 is connected between thesecondary compressor 2 and the inner storage tank 6 . Themulti-stage expander 500 includes a series-connectedprimary expander 10 and asecondary expander 11, and themulti-stage regenerator 600 includes aprimary regenerator 12 and a secondary regenerator 13, and theprimary regenerator 12 is connected inside Between the layer storage tank 6 and theprimary expander 10 , the secondary regenerator 13 is connected between theprimary expander 10 and thesecondary expander 11 .

卡琳娜循环机组700包括蒸发器17、分离器18、氨膨胀机19、吸收器21、膨胀阀22、冷凝器23、工质泵24、预热器25和第二发电机20，其中，蒸发器17包括相互连通的A1口和B1口、相互连通的C1口和D1口，预热器25包括相互连通的A2口和B2口、相互连通的C2口和D2口。TheKarina cycle unit 700 includes anevaporator 17, aseparator 18, anammonia expander 19, anabsorber 21, anexpansion valve 22, acondenser 23, a workingfluid pump 24, a preheater 25 and asecond generator 20, wherein,Evaporator 17 includes A1 port and B1 port communicated with each other, C1 port and D1 port communicated with each other, preheater 25 includes A2 port and B2 port communicated with each other, C2 port and D2 port communicated with each other.

双层储罐400、多级冷却器300、储热罐7、多级回热器600、C1口、D1口依次连通，形成循环回路、且内部的流动介质为导热油，导热油从双层储罐400输送至多级冷却器300、并被压缩空气加热后存储至储热罐7，储热罐7输送导热油至多级回热器600，导热油加热流经多级回热器600的压缩空气，多级回热器600输送导热油至蒸发器17，导热油利用余温加热流经蒸发器17的氨水溶液，并流回双层储罐400。The double-layer storage tank 400, themulti-stage cooler 300, the heat storage tank 7, themulti-stage regenerator 600, the C1 port, and the D1 port are connected in sequence to form a circulation loop, and the internal flow medium is heat-conducting oil. Thestorage tank 400 is transported to themulti-stage cooler 300, and is heated by the compressed air and stored in the heat storage tank 7. The heat storage tank 7 transports the heat-conducting oil to themulti-stage regenerator 600, and the heat-conducting oil heats the compressed air flowing through themulti-stage heat regenerator 600. Air, themulti-stage regenerator 600 transports the heat-conducting oil to theevaporator 17 , and the heat-conducting oil uses the residual temperature to heat the ammonia solution flowing through theevaporator 17 and flows back to the double-layer storage tank 400 .

B1口、分离器18、氨膨胀机19、吸收器21、冷凝器23、工质泵24、C2口、D2口、A1口依次连通，形成循环回路，且内部的流动介质为氨水溶液。B1 port,separator 18,ammonia expander 19,absorber 21,condenser 23, workingfluid pump 24, C2 port, D2 port, A1 port are connected in sequence to form a circulation loop, and the internal flow medium is ammonia solution.

多级回热器600的高温侧出口均与蒸发器17连通，蒸发器17与分离器18连通，分离器18用于分离蒸发器17产生的高温富氨溶液，形成富氨蒸气和贫氨溶液。分离器18出口分成两路，一路为富氨蒸气依次进入氨膨胀机19和吸收器21，另一路为贫氨溶液依次进入预热器25、膨胀阀22和吸收器21。The high temperature side outlets of themulti-stage regenerator 600 are all communicated with theevaporator 17, and theevaporator 17 is communicated with theseparator 18. Theseparator 18 is used to separate the high temperature ammonia-rich solution produced by theevaporator 17 to form ammonia-rich vapor and lean ammonia solution. . The outlet of theseparator 18 is divided into two paths, one for the ammonia-rich vapor enters theammonia expander 19 and theabsorber 21 in sequence, and the other for the lean ammonia solution which enters the preheater 25, theexpansion valve 22 and theabsorber 21 in sequence.

膨胀阀22和预热器25相连，对预热器25出口的贫氨溶液降压，氨膨胀机19与第二发电机20连接，氨膨胀机19用于膨胀来自分离器18的富氨蒸气做功并推动第二发电机20输出电力。吸收器21与氨膨胀机19和膨胀阀22连接，利用膨胀阀22输出的低温低压贫氨溶液吸收氨膨胀机19输出的乏气，形成低压氨水混合物；Theexpansion valve 22 is connected to the preheater 25 to depressurize the lean ammonia solution at the outlet of the preheater 25. Theammonia expander 19 is connected to thesecond generator 20, and theammonia expander 19 is used to expand the ammonia-rich vapor from theseparator 18. Do work and push thesecond generator 20 to output electricity. Theabsorber 21 is connected with theammonia expander 19 and theexpansion valve 22, and utilizes the low-temperature and low-pressure lean ammonia solution output by theexpansion valve 22 to absorb the depleted gas output by theammonia expander 19 to form a low-pressure ammonia-water mixture;

冷凝器23与吸收器21连接，利用多级膨胀机500出口的低温空气作为冷源对氨水混合物降温冷凝形成低压富氨溶液；工质泵24与冷凝器23连接，对低压富氨溶液进行加压并输送进预热器25的C2口进行加热，氨水溶液在预热器25中利用来自分离器18的贫氨溶液进行预加热后进入蒸发器17，并加热来自来工质泵24的低温富氨溶液。Thecondenser 23 is connected with theabsorber 21, and the low-temperature air at the outlet of themultistage expander 500 is used as a cold source to cool and condense the ammonia-water mixture to form a low-pressure ammonia-rich solution; the workingfluid pump 24 is connected to thecondenser 23, and the low-pressure ammonia-rich solution is added. Pressure and transport into the C2 port of the preheater 25 for heating, the ammonia solution is preheated in the preheater 25 by the lean ammonia solution from theseparator 18 and then enters theevaporator 17, and heats the low temperature from the workingfluid pump 24. Ammonia-rich solution.

内层储罐6与多级回热器600之间设置有第一电磁阀14，第一电磁阀14为节流阀；储热罐7和多级冷却器300之间设置有第二电磁阀15；多级回热器600与蒸发器17之间设置有第三电磁阀16。Afirst solenoid valve 14 is arranged between the inner storage tank 6 and themulti-stage regenerator 600 , and thefirst solenoid valve 14 is a throttle valve; a second solenoid valve is arranged between the heat storage tank 7 and themulti-stage cooler 300 15; a third solenoid valve 16 is provided between themulti-stage regenerator 600 and theevaporator 17.

本实施例提供的一种耦合卡琳娜循环的压缩空气储能系统100的工作过程：The working process of the compressed airenergy storage system 100 coupled with Karina cycle provided in this embodiment:

在系统压缩储能的过程中，例如当电网处于负荷低谷或有可再生能源电力供应时：打开第二电磁阀15，关闭第一电磁阀14和第三电磁阀16，启动电动机8带动一级压缩机1和二级压缩机2，并将外层储罐5中储存的导热油持续输送至一级冷却器3和二级冷却器4的低温侧。由此，一级压缩机1将环境空气压缩至高温低压后可直接排入一级冷却器3的高温侧，流经一级冷却器3高温侧的压缩空气会不断将热量释放给流经其低温侧的导热油，导热油吸热升温后则流入储热罐7以备发电阶段使用，放热降温后的压缩空气则进入二级压缩机2继续进行压缩，二级压缩机2将一级冷却器3的排气压缩至高温高压后排入二级冷却器4的高温侧，导热油吸热升温后会直接流入储热罐7以备发电阶段使用，放热降温后的高压空气则流入内层储罐6储存，受换热器效能限制以及刚性储气罐储气的热力过程，放热降温后的高压空气在进入内层储罐6时仍然具有一定的温度且储罐内空气温度会随着储气过程而增加，此时利用外层储罐5内的低温导热油吸收热量，降低压缩储能过程中内层储罐6内空气温度，可以增加同等储气压力下储气罐内储存空气的质量。In the process of compressing energy storage in the system, for example, when the power grid is at a low load or there is renewable energy supply: open the second solenoid valve 15, close thefirst solenoid valve 14 and the third solenoid valve 16, start the motor 8 to drive the first stage The compressor 1 and thesecondary compressor 2 continuously deliver the heat transfer oil stored in the outer storage tank 5 to the low temperature side of the primary cooler 3 and the secondary cooler 4. As a result, the primary compressor 1 compresses the ambient air to high temperature and low pressure, and can be directly discharged into the high temperature side of the primary cooler 3, and the compressed air flowing through the high temperature side of the primary cooler 3 will continuously release heat to the high temperature side of the primary cooler 3. The heat transfer oil on the low temperature side, after the heat transfer oil absorbs heat and warms up, flows into the heat storage tank 7 for use in the power generation stage, and the compressed air after the heat release and cooling enters thesecondary compressor 2 for further compression. The exhaust gas of the cooler 3 is compressed to high temperature and high pressure and then discharged into the high temperature side of the secondary cooler 4. After the heat transfer oil heats up, it will directly flow into the heat storage tank 7 for use in the power generation stage, and the high pressure air after the heat release and cooling will flow into The storage in the inner storage tank 6 is limited by the performance of the heat exchanger and the thermodynamic process of gas storage in the rigid air storage tank. It will increase with the gas storage process. At this time, the low-temperature heat-conducting oil in the outer storage tank 5 is used to absorb heat to reduce the air temperature in the inner storage tank 6 during the compression energy storage process, which can increase the gas storage tank under the same storage pressure. The quality of the air stored inside.

在系统膨胀释能的过程中，关闭第二电磁阀15，打开第一电磁阀14、第三电磁阀16，将内层储罐6中储存的常温高压的空气输送至一级回热器12的低温侧，并将储热罐7中储存的导热油持续输送至一级回热器12和二级回热器13的高温侧。此时，流经一级回热器12低温侧的空气会不断从流经其高温侧的导热油吸收热量，吸热升温后的压缩空气则进入一级膨胀机10膨胀做功。一级膨胀机10将膨胀做功后的压缩空气排入二级回热器13的低温侧。此时，流经二级回热器13低温侧的空气会不断从流经其高温侧导热油吸收热量，吸热升温后的压缩空气则直接进入二级膨胀机11继续进行膨胀做功，导热油放热降温后通过第三电磁阀16进入蒸发器17，氨水溶液在蒸发器17中吸收导热油热能，导热油进入外层储罐5，用于释能阶段加热内层储罐6内的空气，而生成的氨水混合物气体进入分离器18中，氨水混合物在分离器18中被分离成富氨蒸气和贫氨溶液。富氨蒸气进入氨膨胀机19，所述氨膨胀机19用于利用所述富氨蒸气膨胀做功并推动第二发电机20输出电力，所述富氨蒸气膨胀做功后进入所述吸收器21。所述贫氨溶液进入预热器25，与来自工质泵24的氨水溶液进行热交换。所述预热器25出口贫氨溶液进入膨胀阀22释压膨胀，所述膨胀阀22出口的低温低压贫氨溶液进入吸收器21中吸收来自所述氨膨胀机19出口的乏气，形成低温低压氨水混合物。来自吸收器21的低温低压氨水混合物在冷凝器23中被二级膨胀机11出口的低温空气冷凝后形成氨水溶液进入工质泵24中加压。加压后的氨水溶液在预热器25中预加热后进入蒸发器17中。During the process of system expansion and energy release, the second solenoid valve 15 is closed, thefirst solenoid valve 14 and the third solenoid valve 16 are opened, and the normal temperature and high pressure air stored in the inner storage tank 6 is transported to theprimary regenerator 12 The heat transfer oil stored in the heat storage tank 7 is continuously transported to the high temperature side of theprimary regenerator 12 and the secondary regenerator 13. At this time, the air flowing through the low temperature side of theprimary regenerator 12 will continuously absorb heat from the heat transfer oil flowing through the high temperature side, and the compressed air after the heat absorption and heating will enter theprimary expander 10 for expansion and work. Theprimary expander 10 discharges the compressed air after expansion work into the low temperature side of the secondary regenerator 13 . At this time, the air flowing through the low temperature side of the secondary regenerator 13 will continuously absorb heat from the heat transfer oil flowing through its high temperature side, and the compressed air after heat absorption and heating will directly enter thesecondary expander 11 to continue to expand and do work, and the heat transfer oil After the heat is released and cooled, it enters theevaporator 17 through the third solenoid valve 16. The ammonia solution absorbs the heat energy of the heat-conducting oil in theevaporator 17, and the heat-conducting oil enters the outer storage tank 5 for heating the air in the inner storage tank 6 during the energy release stage. , and the generated ammonia-water mixture gas enters theseparator 18, and the ammonia-water mixture is separated into ammonia-rich vapor and lean ammonia solution in theseparator 18. The ammonia-rich vapor enters theammonia expander 19 , and theammonia expander 19 is used to utilize the ammonia-rich vapor expansion to perform work and push thesecond generator 20 to output electricity, and the ammonia-rich vapor expands to enter theabsorber 21 after performing work. The lean ammonia solution enters the preheater 25 and exchanges heat with the ammonia solution from the workingfluid pump 24 . The lean ammonia solution at the outlet of the preheater 25 enters theexpansion valve 22 to release pressure and expand, and the low-temperature and low-pressure lean ammonia solution at the outlet of theexpansion valve 22 enters theabsorber 21 to absorb the depleted gas from the outlet of theammonia expander 19 to form a low temperature Low pressure ammonia water mixture. The low-temperature and low-pressure ammonia-water mixture from theabsorber 21 is condensed by the low-temperature air at the outlet of thesecondary expander 11 in thecondenser 23 to form an ammonia-water solution and enters the workingfluid pump 24 for pressurization. The pressurized ammonia solution is preheated in the preheater 25 and then enters theevaporator 17 .

在上述过程中，放气时内层储罐6内气压降低，使内层储罐6内空气温度降低，空气比体积减小，利用流入外层储罐5带有余温的导热油对内层储罐6的空气进行加热，可提高膨胀释能过程中内层储罐6内空气温度。In the above process, the air pressure in the inner layer storage tank 6 is reduced when the air is released, so that the air temperature in the inner layer storage tank 6 is reduced, and the air specific volume is reduced. Heating the air in the storage tank 6 can increase the temperature of the air in the inner storage tank 6 during the expansion and energy release process.

其中，卡琳娜循环机组700做功过程与压缩空气释能发电过程同时进行，循环采用氨水溶液作为循环工质。Among them, the work process ofKarina cycle unit 700 is carried out at the same time as the compressed air energy release power generation process, and the cycle uses ammonia solution as the circulating working medium.

优选地，除末级压缩机以外的各级压缩机均定速运行，末级压缩机变速运行，各级压缩机的排气温度均为200℃～400℃，末级压缩机的排气压力范围为4MPa～12MPa。冷却器高温侧的蓄热工质出口温度为150℃～300℃。Preferably, the compressors of all stages except the last stage compressor are operated at a constant speed, the last stage compressor is operated at a variable speed, the exhaust temperature of the compressors at all stages is 200°C to 400°C, and the exhaust pressure of the last stage compressor is The range is 4MPa to 12MPa. The outlet temperature of the heat storage working medium on the high temperature side of the cooler is 150°C to 300°C.

本实施例提供的一种耦合卡琳娜循环的压缩空气储能系统100的有益效果包括：The beneficial effects of the compressed airenergy storage system 100 coupled with Karina cycle provided by this embodiment include:

与现有技术相比，本实施例提供的一种耦合卡琳娜循环的压缩空气储能系统100通过低温导热油实现对压缩空气储能系统在充气储能和膨胀释能阶段储气罐内温度的调节，采用卡琳娜循环机组700吸收余温进行发电，实现压缩空气储能阶段和膨胀释能阶段系统储气罐温度的调节控制和发电效率的提升，在压缩储能阶段，通过外层储罐5的低温导热油吸收进入内层储罐6的高温高压气体热量，降低压缩储能过程中的内层储罐6的温度，有效提高了压缩空气储能系统的储能能力；膨胀释能阶段，利用来自多级回热器600出口的导热油余热通过卡琳娜循环机组700进行发电，剩余热量随导热油进入外层储罐5用于对内层储罐6内的高压空气加热，使内层储罐6的温度增加，同等情况下可提高释能过程储气罐内空气的压力，有效提高了压缩空气储能的做功能力，从而提高了系统的储能效率。Compared with the prior art, a compressed airenergy storage system 100 coupled with Karina cycle provided by this embodiment realizes the storage of compressed air in the air storage tank of the compressed air energy storage system during the stages of inflating energy storage and expansion energy release through low-temperature heat-conducting oil. To adjust the temperature, theKarina cycle unit 700 is used to absorb the residual temperature for power generation, to realize the adjustment and control of the temperature of the system air storage tank and the improvement of the power generation efficiency in the compressed air energy storage stage and the expansion energy release stage. The low-temperature heat-conducting oil of the layer storage tank 5 absorbs the heat of the high-temperature and high-pressure gas entering the inner layer storage tank 6, reduces the temperature of the inner layer storage tank 6 during the compression energy storage process, and effectively improves the energy storage capacity of the compressed air energy storage system; expansion; In the energy release stage, the residual heat of the heat-conducting oil from the outlet of themulti-stage regenerator 600 is used to generate electricity through theKarina cycle unit 700, and the residual heat enters the outer storage tank 5 with the heat-conducting oil and is used for the high-pressure air in the inner storage tank 6. Heating increases the temperature of the inner storage tank 6. Under the same conditions, the pressure of the air in the gas storage tank can be increased during the energy release process, which effectively improves the working ability of compressed air energy storage, thereby improving the energy storage efficiency of the system.

以上所描述的装置实施例仅是示意性的，其中作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place , or distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

以上，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be Included within the scope of protection of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

Translated fromChinese

1.一种耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述耦合卡琳娜循环的压缩空气储能系统包括双层储罐(400)、多级压缩机(200)、多级冷却器(300)、多级膨胀机(500)、多级回热器(600)、储热罐(7)、电动机(8)、第一发电机(9)和卡琳娜循环机组(700)，其中，所述多级冷却器(300)和所述电动机(8)均与所述多级压缩机(200)连接，所述多级回热器(600)和所述第一发电机(9)均与所述多级膨胀机(500)连接；1. A compressed air energy storage system coupled with Karina cycle, characterized in that the compressed air energy storage system coupled with Karina cycle comprises a double-layer storage tank (400), a multi-stage compressor (200), Multi-stage cooler (300), multi-stage expander (500), multi-stage regenerator (600), heat storage tank (7), electric motor (8), first generator (9) and Karina cycle unit (700), wherein the multi-stage cooler (300) and the electric motor (8) are both connected to the multi-stage compressor (200), the multi-stage regenerator (600) and the first The generators (9) are all connected with the multi-stage expander (500);所述卡琳娜循环机组(700)包括蒸发器(17)、分离器(18)、氨膨胀机(19)、吸收器(21)、冷凝器(23)、工质泵(24)、预热器(25)和第二发电机(20)，其中，所述蒸发器(17)包括相互连通的A1口和B1口、相互连通的C1口和D1口，所述预热器(25)包括相互连通的A2口和B2口、相互连通的C2口和D2口；The Karina cycle unit (700) includes an evaporator (17), a separator (18), an ammonia expander (19), an absorber (21), a condenser (23), a working fluid pump (24), a preheater A heater (25) and a second generator (20), wherein the evaporator (17) comprises A1 port and B1 port that communicate with each other, C1 port and D1 port that communicate with each other, and the preheater (25) Including the interconnected A2 port and B2 port, and the interconnected C2 port and D2 port;所述双层储罐(400)、所述多级冷却器(300)、所述储热罐(7)、所述多级回热器(600)、所述C1口、所述D1口依次连通，形成循环回路、且内部的流动介质为导热油，所述导热油从所述双层储罐(400)输送至所述多级冷却器(300)、并被压缩空气加热后存储至所述储热罐(7)，所述储热罐(7)输送所述导热油至所述多级回热器(600)，所述导热油加热流经所述多级回热器(600)的所述压缩空气，所述多级回热器(600)输送所述导热油至所述蒸发器(17)，所述导热油利用余温加热流经所述蒸发器(17)的氨水溶液，并流回所述双层储罐(400)；The double-layer storage tank (400), the multi-stage cooler (300), the heat storage tank (7), the multi-stage regenerator (600), the C1 port, and the D1 port in sequence connected to form a circulation loop, and the internal flow medium is heat transfer oil, the heat transfer oil is transported from the double-layer storage tank (400) to the multi-stage cooler (300), heated by compressed air, and stored in the the heat storage tank (7), which transports the heat-conducting oil to the multi-stage regenerator (600), and the heat-conducting oil flows through the multi-stage heat regenerator (600) for heating the compressed air, the multi-stage regenerator (600) transports the heat transfer oil to the evaporator (17), and the heat transfer oil uses the residual temperature to heat the ammonia solution flowing through the evaporator (17) , and flow back to the double-layer storage tank (400);所述B1口、所述分离器(18)、所述氨膨胀机(19)、所述吸收器(21)、所述冷凝器(23)、所述工质泵(24)、所述C2口、所述D2口、所述A1口依次连通，形成循环回路，且内部的流动介质为氨水溶液，所述氨膨胀机(19)用于膨胀来自所述分离器(18)的富氨蒸气做功并推动所述第二发电机(20)输出电力。The B1 port, the separator (18), the ammonia expander (19), the absorber (21), the condenser (23), the working fluid pump (24), the C2 The port, the D2 port, and the A1 port are connected in sequence to form a circulation loop, and the internal flow medium is an aqueous ammonia solution, and the ammonia expander (19) is used to expand the ammonia-rich vapor from the separator (18). Do work and push the second generator (20) to output electricity.2.根据权利要求1所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述双层储罐(400)包括外层储罐(5)和内层储罐(6)，所述内层储罐(6)通过通气管道支撑在所述外层储罐(5)的内部，所述内层储罐(6)用于存储加压后的空气，所述外层储罐(5)用于存储蓄热工质。2. The compressed air energy storage system coupled with Karina cycle according to claim 1, wherein the double-layer storage tank (400) comprises an outer-layer storage tank (5) and an inner-layer storage tank (6) , the inner layer storage tank (6) is supported inside the outer layer storage tank (5) through a ventilation pipe, the inner layer storage tank (6) is used for storing pressurized air, and the outer layer storage tank (6) is used for storing pressurized air. The tank (5) is used to store the heat storage working medium.3.根据权利要求2所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述内层储罐(6)的内壁上设置有换热翅片。3 . The compressed air energy storage system coupled with Karina cycle according to claim 2 , wherein heat exchange fins are provided on the inner wall of the inner layer storage tank ( 6 ). 4 .4.根据权利要求2所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述外层储罐(5)设置有两处连接口、且分别与所述多级冷却器(300)和所述蒸发器(17)连接，所述内层储罐(6)设置有两处连接口、且分别与所述多级冷却器(300)和节流阀连接。4 . The compressed air energy storage system coupled with Karina cycle according to claim 2 , wherein the outer storage tank ( 5 ) is provided with two connection ports, which are respectively connected with the multi-stage cooler. 5 . (300) is connected to the evaporator (17), and the inner storage tank (6) is provided with two connection ports, which are respectively connected to the multi-stage cooler (300) and the throttle valve.5.根据权利要求1所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述卡琳娜循环机组(700)还包括膨胀阀(22)；5. The compressed air energy storage system coupled with Karina cycle according to claim 1, wherein the Karina cycle unit (700) further comprises an expansion valve (22);所述预热器(25)和所述分离器(18)连通，利用贫氨溶液加热来自所述工质泵(24)的所述氨水溶液，所述膨胀阀(22)的入口和所述预热器(25)连通，用于对贫氨溶液节流降压，所述吸收器(21)与所述膨胀阀(22)、所述氨膨胀机(19)出口连通，用于将贫氨溶液与富氨蒸气混合，形成氨水混合工质。The preheater (25) communicates with the separator (18), and uses a lean ammonia solution to heat the ammonia solution from the working fluid pump (24), the inlet of the expansion valve (22) and the The preheater (25) is communicated with, for throttling and depressurizing the lean ammonia solution, the absorber (21) is communicated with the expansion valve (22) and the outlet of the ammonia expander (19), and is used for reducing the lean ammonia solution The ammonia solution is mixed with the ammonia-rich vapor to form an ammonia-water mixed working medium.6.根据权利要求5所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述冷凝器(23)连接所述吸收器(21)出口，所述冷凝器(23)与所述多级膨胀机(500)的出口相连，并以所述多级膨胀机(500)输出的空气作为冷源，所述冷源用于对所述氨水混合工质降温冷凝，形成氨水混合物。6 . The compressed air energy storage system coupled with Karina cycle according to claim 5 , wherein the condenser ( 23 ) is connected to the outlet of the absorber ( 21 ), and the condenser ( 23 ) is connected to the outlet of the absorber ( 21 ). 7 . The outlets of the multi-stage expander (500) are connected, and the air output from the multi-stage expander (500) is used as a cold source, and the cold source is used for cooling and condensing the ammonia-water mixed working medium to form an ammonia-water mixture .7.根据权利要求1所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述多级压缩机(200)包括多个串联的压缩机，所述多级冷却器(300)包括多个冷却器，每个所述压缩机的出口设置有一个所述冷却器。7. The compressed air energy storage system coupled with Karina cycle according to claim 1, wherein the multi-stage compressor (200) comprises a plurality of compressors connected in series, and the multi-stage cooler (300) ) includes a plurality of coolers, one of which is provided at the outlet of each of the compressors.8.根据权利要求1所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，所述多级膨胀机(500)包括多个串联的膨胀机，所述多级回热器(600)包括多个回热器，每个所述膨胀机的入口设置有一个所述回热器。8. The compressed air energy storage system coupled with Karina cycle according to claim 1, wherein the multi-stage expander (500) comprises a plurality of series-connected expanders, and the multi-stage regenerator ( 600) includes a plurality of regenerators, one of which is provided at the inlet of each of the expanders.9.根据权利要求2所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，在系统压缩储能的过程中，所述外层储罐(5)内的导热油用于吸收所述内层储罐(6)内空气的热量，以降低所述内层储罐(6)内空气的温度。9. The compressed air energy storage system coupled with Karina cycle according to claim 2, characterized in that, in the process of system compression and energy storage, the heat transfer oil in the outer storage tank (5) is used to absorb The heat of the air in the inner layer storage tank (6) is used to reduce the temperature of the air in the inner layer storage tank (6).10.根据权利要求2所述的耦合卡琳娜循环的压缩空气储能系统，其特征在于，在系统释能的过程中，所述外层储罐(5)内的导热油用于对所述内层储罐(6)进行加热，以提高所述内层储罐(6)内空气的温度。10. The compressed air energy storage system coupled with Karina cycle according to claim 2, characterized in that, in the process of system energy release, the heat transfer oil in the outer storage tank (5) is used to The inner layer storage tank (6) is heated to increase the temperature of the air in the inner layer storage tank (6).

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